Culvert-mold.



B. E. WOODHULL & W. A. WILSON.

I 'QULVBBT MOLD; Arrm om xo'g FILED JULY 1,1911.

1,055,380. Patented Mar. 11.1913.

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wwmm STATES PATENT. ormo-E.

.ie'raoie 1e. woonnutt, or wnnsrn'a, Ann WILLIAM A. wnson or LocKron'r, new

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cULvERr-mom).

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Specification of Letters Patent.

Application liled m 1, 1911. Serial No. (536,487.

liocliporhinthe county'of Niagara, State Eli? oi ew York,'haveinvented a new and usetul improvement in Culvert-Molds, which :n'iprovement is fully set forth in the follow ing specification and shown in the accoma oying drawings.

The present invention relates to molds, having been more particularly designed for molding concrete culverts or sluice-ways and an object of the invention is to provide an inexpensive structure which may be quickly collapsed. and removed after the formation oi. the culvert or sluice w'ay.

To these and other ends the invention consists in certain parts and combinations of parts all of which will be hereinafter described, the novel features being pointed out in the appended claim.

In the drawings: Figi'rre 1 shows in side elevation a' plurality of molds with the culvert or sluice-way in vertical section; Fig. 2, is a longitudinal. section of one of the molds with an end collar attached thereto; Fig. 3

a section on the line aa Fig. 2; Fig. 4 is anend view; andFig. illustrates the nner in which the moldis collapsed in renewing the same from the culvert or sluicewavz. I

in carrying out the invention, thereis employed a sheet ofmaterial in one or more p" :es rolled in the form of a cylinder and having its free edges one overlapping the other.

The :treeed es of the cylinder are detachohly connecter together 1n order that they may be separated to permit the removal of the mold after the culvert or sluice-way is harmed. Preferably this connection; is ophle from the interior of the cylinder and in the form of 'a longitudinal series of '53 extending inwardly from the outer- .p of the cylindrical body 1 through gitudinal series of openings 3 formed in. the innermost lap of the cylindricalbody. '5 addition, to the longitudinal series of "rigs 3, one or more of the series of o; nmgs 4 may be diameter of the mflimlricalbody 1 is rerovided at a greateri ance from the o go of the latter than duced, thus permitting the mold to be used for making culverts of different sizes.

Arranged to, pass throu h the lon 'tudinal series of eyes 2 is a evice pre erably 1n the form of a'rod 5 pointed-at one end at 6 to facilitate its introduction through the eyes and havin a hand piece 7 at its other end through w ich it is controlled. It is apparexg,1 that this rod retains the eyes 2 within e openings 3 or 4.

One end of each moldsection has a split band or collar and riveted at 9 on the inner side of the cylindrical portion and projecting from said cylindrical portion to provide a reduced end on the mold for fitting within an end of another mold, thus permitting a culvert to be formed from a number of molds arranged end to end.

For the purpose of defining the end 'of the culvert there may be provided s lit collars- 10 adapted to fit on the exterior o the molds each preferably being clamped thereto by a screw bolt 11 which passes throu h perforated cars 12 arranged on the. col ar 10 on opposite sides of the split. thereof, the tightemng of the nut on the bolt acting to clamp the collar on the cylindrical body 1. At one PatentedMar. 11, 1913.

edge the collar is provided with a flange 13 I molds are fitted end to end as shown in Fig. "1, with the split collars 10 at eachend of the series and with a locking rod 5 passed through the eyes 2 of each mold. The con-,

'crete 18 now packed about the molds which are not removed until the concrete has set. To remove them, the rods 5 are withdrawn from the e es 2 and-the inner'lap of the mold is wit drawn from thestaples or eyes 2, so that the mold may be contracted 0r collapsed to a diameter less than the internal diameter of the culvert, thus ermitting it to be withdrawnlongitudina y from the culvert. i 1

From the foregoing it will be seen that there has been provided an economical structure which'may be quickly set in position or verts of different sizes and it has but few parts so that it is not liable to get out of order. v y

While the inventionhas been particularly designed for culverts and sluice-ways and a other places where it /fits onthe interior of the object to be molded, it will be under-- collapsed. .It is ad ustable for making cultions, each-c01lar having a surrounding:

stood that it is not limited to this arrangement. V

\Vhat ,weficlaim as our invention and de sire to seeureby Letters Patent ist In a culvert mold, a plurality of sectione each embodying a sheet of rolled material with overlapping edges individualeeeuring means' for the overlapping edgesepemble from the interior of the sections, split collars surrounding the outer ends of the end gec- 

